计算机工程 ›› 2008, Vol. 34 ›› Issue (17): 147-148,.doi: 10.3969/j.issn.1000-3428.2008.17.052

• 安全技术 • 上一篇    下一篇

抗合谋攻击的门限签名方案

侯整风,赵 香,杨 曦   

  1. (合肥工业大学计算机与信息学院,合肥 230009)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-05 发布日期:2008-09-05

Threshold Signature Scheme to Withstand Conspiracy Attack

HOU Zheng-feng, ZHAO Xiang, YANG Xi   

  1. (School of Computer and Information, Hefei University of Technology, Hefei 230009)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-05 Published:2008-09-05

摘要: 门限签名是一种特殊而重要的数字签名。但在现有的门限签名方案中,合谋攻击一直是一个难以解决的问题。该文对现有抗合谋攻击门限签名方案进行了安全性分析,指出该方案存在的缺陷,并基于现有的门限签名体制,对如何抵抗合谋攻击给出了一些启发式的思想和方法。

关键词: 密码学, 门限签名, 合谋攻击

Abstract: Threshold signature is a kind of special and important digital signature. But in the existing threshold signature scheme, conspiracy attack is still a problem which is difficult to solve. This paper analyzes a threshold signature scheme to withstand conspiracy attack, analyzes its weakness and proposes some heuristic idea and methods to withstand conspiracy attack based on the existing threshold signature schemes.

Key words: cryptography, threshold signature, conspiracy attack

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